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Finding the Fourth Proportional to 711.46, 981.57 and 525.34

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Solution

The fourth proportional to 711.46, 981.57 and 525.34 is: 724.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.46 : 981.57 = 525.34 : x
  2. Step 2: Convert to fraction form
    711.46/981.57 = 525.34/x
  3. Step 3: Cross multiply
    711.46x = 981.57 × 525.34
  4. Step 4: Simplify right side
    711.46x = 515,657.98
  5. Step 5: Solve for x
    x = 515,657.98/711.46
  6. Step 6: Final answer
    x = 724.79

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.